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Convexity
(noun)

- The quality or state of being convex.
- A rounded protuberance or surface that bulges outwards.
- In mathematics, the curved surface of a three-dimensional shape, especially one that bulges outwards.

### Origin:

Late latin convexitas, from latin convexus ("rounded, arched, bent outwards"), from con- + vexus ("bent"), from vēxum, perfect passive participle of vēngō ("i ben.d")

### Examples:

- The convexity of the road makes it easier to see other cars on it.
- The convexity of the eyeglasses made them appear larger than they were.
- In mathematics, the convexity of a shape is an important property for optimizing its use in various applications.
- The convexity of the ball made it roll away from the wall when it hit it.
- The unique convexity of the moon's surface made it ideal for landing on it.